INTRODUCTION 1. The P (Program)
Mode provides fully automatic flash photography by merely setting the mode selector
and pressing the shutter button.
2. The A-TTL mode provides simple, fully automatic operation under any conditions
from total darkness to fill-in flash.
3. The FE Lock mode incorporates the AE lock concept into flash photography using
spot metering.
4. Two manual modes, Hi and Lo, can be selected in accordance with the exposure conditions.

The 300TL is also equipped with the built-in zoom mechanism that covers the focal
length of the lens down to 24mm without a wide panel, and a bounce flash mechanism,
plus automatic slow sync flash mechanism. In addition, fully automatic TTL multiple
flash photography using up to four Canon Speedlite 300TL or Canon Macro Ring Lite
ML-2 units and the second curtain sync flash photography are also possible. For a
full understanding of the 300TL, please read this instruction booklet carefully before
using the flash.

TTL Control System The sensor inside the camera body measures the light reflected
from the film surface and cuts off flash emission automatically when the subject
has been properly exposed. Since only the light which has passed through the lens
is measured it is not necessary to make any exposure compensation, and more accurate
exposure can be obtained.

Credit: Pawel Nabe for his image
on the Data Memory Back. EEwyn Foo, my nephew,
who has spent quite a number of nights converting the original manual in HTML format.
Mr. Richard Yeow, General Manager
-Optical Division of Canon Marketing for granting special
permission to reproduce this manual into HTML format in his site as a form of obligation
to all the T90 users worldwide. Maintenance
Team:Kaipin, Terry Carraway & Dr Strangelove; Tom Scott, for his images
of the SPD cell, Chris Tutti for his initial effort
to scan and prepared the T90 manual in PDF format. My staffs Miss Wati and Mirza for helping the basic setup
work. * Canon, T90, FD Lenses, Canon Marketing are registered trade
names or trademarks of Canon Inc. Japan.